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  • 20025 - 2-tert-Butylimino-2-diethylamino-1,3-dimethylperhydro-1,3,2-diazaphosphorine

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20025 Sigma-Aldrich

2-tert-Butylimino-2-diethylamino-1,3-dimethylperhydro-1,3,2-diazaphosphorine

purum, ≥98.0% (GC)

Synonym: BEMP

  • CAS Number 98015-45-3

  • Empirical Formula (Hill Notation) C13H31N4P

  • Molecular Weight 274.39

  •  Beilstein Registry Number 5534901

  •  MDL number MFCD00043143

  •  PubChem Substance ID 24851355

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Properties

Related Categories Acids & Bases, Bases, Chemical Synthesis, Phosphazene Bases, Synthetic Reagents More...
InChI Key   VSCBATMPTLKTOV-UHFFFAOYSA-N
grade   purum
assay   ≥98.0% (GC)
refractive index   n20/D 1.477(lit.)
  n20/D 1.477
bp   74 °C/0.03 mmHg(lit.)
density   0.948 g/mL at 25 °C(lit.)

Description

Other Notes

Same product — same quality — now Sigma-Aldrich brand

Application

2-tert-Butylimino-2-diethylamino-1,3-dimethylperhydro-1,3,2-diazaphosphorine (BEMP), a organic phosphorine base may be used in the following studies:
• Synthesis of a 2,3-dihydrobenzo[1,4]dioxepin-5-one.
• As catalyst in the alkylation reactions of carbon acids.
• As organocatalyst in the controlled "immortal" ring-opening polymerization (iROP) of six-membered cyclic carbonates.

Phosphazene Bases: a Family of Extremely Strong, Non-Ionic, Non-Charged Nitrogen–Bases

General description

2-tert-Butylimino-2-diethylamino-1,3-dimethylperhydro-1,3,2-diazaphosphorine (BEMP) is a phosphazene base. BEMP participates in the mild base catalyzed nucleophilic ring opening of N-sulfonyl aziridines. BEMP supported on polystyrene (PS-BEMP) has been reported as an efficient catalyst for the ring-opening of epoxides with phenols. BEMP is about 2000 times more basic and also much more sterically hindered than DBU (l,8-diazabicyclo[5.4.0]undecene).

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Cross-Coupling Guide
Safety & Documentation

Safety Information

Symbol 
GHS05  GHS05
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
UN 2920 3(8) / PGII
WGK Germany 
3
Flash Point(F) 
230 °F
Flash Point(C) 
110 °C
Protocols & Articles

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